package main

import (
	"fmt"
)

func main()  {

	var num int = 10
	fmt.Println(num)

	var num2 int = (10 + 20) % 3 + 3 - 7
	fmt.Println(num2)

	var num3 int = 10
	// num3 = num3 + 20
	num3 += 20
	fmt.Println(num3)


}